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Weighted Average Calculator

Calculate weighted averages with step-by-step calculations. Supports simple weighted averages, grades, inventory costs, and portfolio allocations.

Calculate weighted averages with clear step-by-step calculations.
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Simple Weighted Average

Total Weight: 90
#ValueWeightRemove
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Weighted Average
8.2222
Weighted Sum: 740•Total Weight: 90
Step-by-Step Calculation

1. Multiply each value by its weight:

5 × 20 = 100
8 × 30 = 240
10 × 40 = 400

2. Sum products and total weights:

Weighted Sum = 100 + 240 + 400 = 740
Total Weight = 20 + 30 + 40 = 90

3. Divide Weighted Sum by Total Weight:

Weighted Average = 740 ÷ 90 = 8.2222

What is Weighted Average Calculator?

Weighted Average Calculator is a comprehensive calculation utility for finding weighted means, course grades, inventory weighted average cost (WAC), and investment portfolio returns with complete step-by-step mathematical breakdowns.

How it works?

Select your calculation mode (Simple Weighted Average, Grade / GPA, Inventory / Weighted Average Cost, or Portfolio), enter or paste your values and weights, and immediately see the weighted average along with exact step-by-step products, sums, and quotients. Easily normalize weights to 100% with a single click.

Frequently Asked Questions

A weighted average (or weighted mean) is an average where each data point is multiplied by a weight reflecting its relative importance, frequency, or proportion, and the sum of these products is divided by the sum of all weights.

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